Before Greg Miller strapped on a basketball hoop as part of the in-the-stands entertainment, his cheerleading mentor was skeptical. "He's got the beard, he's got the belly -- he's going to scare the fans," she told the film crew.

The good-natured guy with the fake beard and prosthetic beer belly hidden under his shirt was a bit slow selling the fries in the concession stand, and looked like he might hurt himself performing with the trampoline-bouncing Dunk Team that entertains Utah Jazz fans during NBA games in Salt Lake City.

Greg Miller, with and without disguise. He runs the 10th-largest U.S. auto retailer.

But Jazz boss Greg Miller -- who, as CEO of Larry H. Miller Group of Cos., also does some heavy-duty auto retailing -- didn't have to worry about landing a job. He was disguised and incognito on the CBS-TV show "Undercover Boss" on Feb. 28.

During the show, on which CEOs wear disguises and work among the underlings to get an employee's-eye view of their company, Miller also worked as a human basketball hoop as part of the cheerleading squad and helped the crew that puts down the floor, which is emblazoned with the signature of his dad and company founder Larry Miller.

Miller, in the tradition of the show, passed out hefty bonuses to the employees assigned to train him and told the Deseret News that he was impressed by "the level of commitment that our employees have."

The Miller Group ranks No. 10 on the Automotive News list of the top 125 U.S. dealership groups in the United States with retail sales of 39,596 new units in 2012.